Realme C20 smartphone was launched on 22nd January 2021. The phone comes with a 6.50-inch touchscreen display with a resolution of 720x1600 pixels at a pixel density of 270 pixels per inch (ppi) and an aspect ratio of 20:9. Realme C20 is powered by a 2.3GHz octa-core MediaTek Helio G35 processor. It comes with 2GB of RAM. The Realme C20 runs Android 10 and is powered by a 5000mAh battery.

As far as the cameras are concerned, the Realme C20 on the rear packs an 8-megapixel camera with an f/2.0 aperture and a pixel size of 1.12-micron. The rear camera setup has autofocus. It sports a 5-megapixel camera on the front for selfies, with an f/2.2 aperture and a pixel size of 1.12-micron.

The Realme C20 runs Realme UI based on Android 10 and packs 32GB of inbuilt storage that can be expanded via microSD card (up to 256GB). The Realme C20 is a dual-SIM (GSM and GSM) smartphone that accepts Nano-SIM and Nano-SIM cards. The Realme C20 measures 165.20 x 76.40 x 8.90mm (height x width x thickness) and weighs 190.00 grams. It was launched in Blue and Gray colours.

Connectivity options on the Realme C20 include Wi-Fi 802.11 a/b/g/n/ac, GPS, Bluetooth v5.10, USB OTG, Micro-USB, FM radio, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include accelerometer, ambient light sensor, and proximity sensor.